1951 JD A onboard tire pump ?

c.d.1951

Member
has anyone ever seen a tire air pump as illustrated in my 1951 John Deere A Operator's Manual page 49 ? Maybe an accessory that would be driven by the PTO ? makes a lot of sense for field use with large volume tires
 
Bought this one at a farm auction last winter. Put in a new leather cup (available from Deere). Hooked it up this spring and drove around the farm yard and aired up low/flat tires on seldom used equipment. Worked like a charm.
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"[b:654c4848f0][i:654c4848f0]<font color="#6699ff">has anyone ever seen a tire air pump as illustrated in my 1951 John Deere A Operator's Manual page 49 ?[/i:654c4848f0][/b:654c4848f0]</font>"

Yes.

Take a look at the information you mentioned on page 29.

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Take a look at the photos below of a farm tire pump.

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"[b:654c4848f0][i:654c4848f0]<font color="#6699ff">Maybe an accessory that would be driven by the PTO ?[/i:654c4848f0][/b:654c4848f0]</font>"

Yes,

Take a look at the photos below of two operator's manuals.

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Take a look at the information in the tractor tire pump sales brochure.

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Hope this helps.
 
I have 2,, there were a lot of them for sale at the Expo show,the guy had about all the styles and a couple with the guard on them..
 
The JD air pumps had 1 basic pump body and 4 different heads so it could be used on model L belt pulleys,
open flywheels, enclosed flywheels and pto shafts. The pto shaft head could be made to fit 1-1/8, 1-3/8, and
1-3/4 pto shafts.
 
A late A has pistons that displace 160 cubic inches each. Would a simple air line that fits into a spark plug hole and a one way check valve make a faster and less expensive air compressor than the tire pump?
 
My comment was meant that it was so simple that it should be included on the tractor. I can't see why this wasn't an add on to the fan shaft with a engaging device. Modern day everything is being made so unnessarily complicated. This type device should have been incorporated in the automobiles as well. I've used the engine pumps and really not a good ideal as it could cause engine piston damage.
 
I always wondered about the safety aspect of it.......

If you were to fill a tire, right from flat, using an engine compressor wouldn't you theoretically have a good sized bomb considering the fuel / air mixture?

It's not like you can just shut the injector off for that cylinder while you're in compressor mode.....


I've used the engine pumps and really not a good ideal as it could cause engine piston damage.
 
I've never seen one in action personally however it was explained to me that an adapter(with check valve) is installed in one of the spark plug holes and the engine is then started.

Is that correct?

(quoted from post at 20:22:48 06/28/18) Glen,

The engine/spark plug compressor uses cylinder compression and vacuum to pump only fresh air into a tire.
 
Yes,, we had one back in the 50's would screw it into an old 235 6cyl Chevy pick up it had a check valve that would let some fresh air in and then the piston pressure would force it out,,better than a hand pump...but not by much....as I think back to what we had to work with in the beginning..and look at what we have now it is amazing...
 
Thanks Tim,

It's starting to make a little more sense to me now......

The spark plug adaptor must have had check valves for both discharge &amp; suction then? Having a check valve that would open during the suction / intake stroke would be the only way to prevent, or at least reduce, the fuel being drawn into the cylinder through the intake valve.


(quoted from post at 15:27:18 06/29/18) Yes,, we had one back in the 50's would screw it into an old 235 6cyl Chevy pick up it had a check valve that would let some fresh air in and then the piston pressure would force it out,,better than a hand pump...but not by much....as I think back to what we had to work with in the beginning..and look at what we have now it is amazing...
 

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